HS Code | 936887 |
| Chemicalname | Phosphoric Acid |
| Molecularformula | H3PO4 |
| Casnumber | 7664-38-2 |
| Appearance | Colorless,odorless,and syrupy liquid |
| Purity | Typically 75% - 85% |
| Ph | <1 (for concentrated solution) |
| Density | 1.685 g/cm³ (at 85%) |
| Boilingpoint | 158°C (317°F,85% solution) |
| Solubilityinwater | Miscible |
| Industrialuses | Fertilizers,metal treatment,detergents,water treatment,food additives |
| Meltingpoint | 21°C (for pure acid) |
| Unnumber | UN 1805 |
| Hazardclass | 8 (Corrosive) |
As an accredited Industrial Grade Phosphoric Acid factory,we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Industrial Grade Phosphoric Acid is packaged in sturdy 35 kg HDPE drums,clearly labeled with product hazard symbols and handling instructions. |
| Container Loading (20′ FCL) | 20′ FCL can load 24MT (1,200 drums x 20kg) of Industrial Grade Phosphoric Acid,securely packed in plastic drums. |
| Shipping | Industrial Grade Phosphoric Acid is shipped in secure,corrosion-resistant containers such as drums,IBC tanks,or bulk tankers. Proper labeling and documentation are required. The shipping process follows hazardous materials regulations,ensuring the chemical is transported safely and handled with appropriate protective measures to prevent leaks or spills during transit. |
| Storage | Industrial Grade Phosphoric Acid should be stored in tightly sealed,corrosion-resistant containers,such as those made from stainless steel,polyethylene,or other compatible materials. Keep the storage area cool,dry,well-ventilated,and away from incompatible substances like strong bases or metals. Protect from moisture and heat sources,and ensure proper labeling for safe handling and emergency response. |
| Shelf Life | Industrial grade phosphoric acid typically has an indefinite shelf life if stored properly in tightly sealed containers,away from moisture and contaminants. |
Purity 85%:Industrial Grade Phosphoric Acid with 85% purity is used in metal surface pretreatment,where it provides effective rust removal and enhances coating adhesion. Stability Temperature 200°C:Industrial Grade Phosphoric Acid with a stability temperature of 200°C is used in high-temperature boiler descaling,where it ensures consistent scale dissolution without decomposition. Viscosity Grade Low:Industrial Grade Phosphoric Acid of low viscosity grade is used in fertilizer production lines,where it promotes efficient mixing and rapid nutrient blending. Melting Point 42°C:Industrial Grade Phosphoric Acid with a melting point of 42°C is applied in food-grade detergent manufacturing,where it enables easy processing and homogeneous dispersion. Particle Size Fine:Industrial Grade Phosphoric Acid with fine particle size is utilized in specialty ceramics manufacturing,where it facilitates uniform distribution and enhanced mechanical strength. Density 1.685 g/cm³:Industrial Grade Phosphoric Acid at a density of 1.685 g/cm³ is used in water treatment plants,where it enables precise dosing for optimal phosphate levels. Corrosion Inhibition Index High:Industrial Grade Phosphoric Acid with a high corrosion inhibition index is used in industrial coolant systems,where it suppresses scale and extends equipment lifespan. Impurity Content <0.5%:Industrial Grade Phosphoric Acid with impurity content less than 0.5% is used in pharmaceutical intermediate synthesis,where it delivers high purity standards for consistent product quality. |
Competitive Industrial Grade Phosphoric Acid prices that fit your budget—flexible terms and customized quotes for every order.
For samples,pricing,or more information,please contact us at +8615380400285or mail to sales2@liwei-chem.com.
We will respond to you as soon as possible.
Tel:+8615380400285
Email:sales2@liwei-chem.com
Flexible payment,competitive price,premium service - Inquire now!
Every day at our chemical plant,we move countless tons of Industrial Grade Phosphoric Acid from reactors to storage. This product shapes countless downstream industries and influences production from fertilizers to metal finishing. Working on the floor and seeing truckloads of this material leave our site for hundreds of different applications,we see firsthand how much care goes into each batch.
Industrial Grade Phosphoric Acid,usually standardized at 85% concentration,serves as a backbone for several manufacturing processes. Our specialized reactors use a controlled process to deliver a consistent,clear solution,meeting the technical expectations of large-scale consumers. From our hands,this acid reaches the factories that drive agricultural,food,and technical industries. Its value comes not just from its acid content but from how we control impurities such as arsenic,heavy metals,and organic residue. Those details separate a quality acid from a mediocre one,and those differences matter when it goes to applications sensitive to contaminants.
Inside our plant,the process starts with wet method reactions. We handle sulfuric acid and phosphate rock,measuring temperature and reacting times precisely. The plant monitors each process line around the clock—both with instruments and trained staff—because even small upsets in process conditions change the final product's impurity profile. By focusing on tight operational controls, our teams produce acid that customers trust for both consistency and performance.
A good portion of the batch’s value comes from how well we manage filtration and clarification. Unremoved insoluble residues can cause problems in downstream equipment or finished products. We filter, analyze, and re-filter if required. There are no shortcuts here; technical grades may accept variance, but for our industrial grade, we do not send out a product until our lab clears it for major impurities and acid strength. We regularly invest in analytical technologies to keep our process under control, ensuring the chemical composition aligns with what partners in fertilizer plants or water treatment need.
Manufacturers like us focus on practical numbers. For industrial use, phosphoric acid must supply at least 85% concentration, with free acidity expressed as P2O5. The acid must remain clear, nearly colorless, and stable after weeks of storage and transit. Customers expect a product with iron content capped below 10 ppm and heavy metals controlled within international limits. Our teams test each lot, since even minor deviations cause production slowdowns for users further down the chain.
Toward the end of each batch cycle, our quality lab reviews the liquid’s density, clarity, and the mineral residue content. For many applications—especially fertilizer-grade applications, rust removers, and some food ingredients—those values make a practical difference. For instance, a small jump in calcium or magnesium concentration might trigger scale formation in industrial pipelines, which explains why we put extra work into removing insoluables from our batches.
We see some customers using our industrial grade acid directly as a raw material in phosphatic fertilizer production. It blends with ammonia to produce monoammonium or diammonium phosphate—critical for agriculture in several countries. From our experience, the success of those formulas depends on how well the acid interacts with their mixing equipment. A clean acid prevents formation of insoluble precipitates, keeping production continuous and reducing equipment downtime.
Other buyers in the metal finishing industry want acid free of contaminants, particularly iron and chlorides. A few extra ppm of iron can interfere with metal surface passivation, which can ruin an entire batch of product. Some paint and pigment formulators also require tight controls, since phosphoric acid may act as a stabilizer or as a chemical intermediate. We have adapted production lines to reduce cross-contamination, knowing how particular each industry stands about its input chemistry.
One of our largest contracts in the past year involved water treatment clients, where our acid helps control pH and prevents scale formation in municipal and industrial systems. The clarity and purity of the acid play a major role in how treatment chemicals perform, especially with environmental standards becoming tougher every year. If the acid introduces more metal ions or brings residual organics, that can throw off expensive dosing systems. Working directly with operatives in those plants gives us feedback on how our product performs in field conditions.
The food industry occasionally uses industrial grade for non-food-contact equipment washing, though we supply separate grades for food preparation. Even in these technical service roles, every impurity matters, since regulatory audits now check washing agent residues on site. Knowing where food safety rules start and end shapes our facility’s segregation of product streams.
A smaller customer segment uses phosphoric acid to regenerate ion exchangers or leach mineral ores. The physical properties matter—too high a viscosity, or a solution clouded with suspended solids, creates costly headaches downstream. We've heard from some buyers about this issue,and in response,we've improved filtration stages and updated our pumps and handling systems.
People often ask what sets industrial grade apart from technical or food grade acids. The main difference lies in impurity content and intended usage. We design industrial grade for performance in industrial settings, prioritizing a balance between purity and cost. The filtration, precipitation, and chemical refining steps take more effort than in lower grades. Food and pharmaceutical grades undergo additional, even more stringent purification.
We produce technical grade for processes that do not demand tight controls on impurities, such as certain cleaning blends or etching solutions. Food grade demands even stricter standards, with batch documentation, traceability, and additional removal of arsenic, cadmium, and other trace metals, well below industrial specifications. Regulatory bodies set these upper limits, and our laboratories measure them batch by batch. While we push impurity levels down for industrial grade, we don't match trace thresholds required by the food industry.
We also see a clear difference between industrial acid and electronic grade acid. Electronics users want virtually contaminant-free solutions,often at great cost,for use in semiconductor and printed circuit board fabrication lines. Few plants in the world achieve the parts-per-billion purity required for those uses;our industrial grade fits those who prefer reliability and availability,while paying respect to reasonable cost and practical impurity controls.
We encourage end-users to suit product selection to both operational needs and regulatory specifications. Some industries,hungry for low cost and high reliability,can achieve their goals with industrial grade phosphoric acid if their process tolerates its minor metals content. Others,under strict regulatory or safety scrutiny,need the extra confidence that comes with pharmaceutical or food grade. Making these choices avoids quality or legal disputes down the line.
From years on the manufacturing side,we know misunderstandings often arise from unclear communication about specification requirements. We see customers sometimes switching grades,up or down,based on changing process needs or evolving compliance rules. We give open,direct feedback—sharing impurity data,offering process tours,or connecting labs—so customers make informed decisions. Each industry faces its own regulations,from Europe’s REACH rules to North American and Asian standards,and the international buyers must consider local as well as export restrictions. Our team tracks regional regulatory shifts,making adjustments when necessary.
Once each batch checks out with laboratory control,our packing,loading,and delivery specialists step in. Industrial grade acid leaves our plant in special lined tankers or high-density polyethylene drums,designed to prevent acid attack and preserve purity. Shipping teams know that a trace of contamination picked up in the wrong container can undo all the careful control work from production. We audit our transit partners and sampling routines closely and switch partners when needed to uphold our standards.
We believe in transparency,so we share the latest batch data on acid strength and impurity content before shipping. Customers tell us these details help with procurement and inventory planning,often using the analytical report to set blending ratios in fertilizer plants or to fine-tune anti-corrosion treatments.
Our on-site safety culture shapes how we handle every aspect of acid production. Staff wear full protective gear and attend ongoing safety training,since even small exposure can be hazardous to health. We regularly upgrade monitoring and accident-prevention protocols,informed by both internal safety reviews and external audits.
We invite feedback from both internal staff and end users. Our experience shows that handling concerns raised early prevents bigger issues later. For example,we improved our tank lining techniques after a transport partner reported minute leaks on acid transfer hoses. Open feedback cycles benefit everyone,from production operators to clients that rely on high uptime.
Industry standards for industrial chemicals never remain static. Each year,new environmental and health regulations emerge,which often change market expectations for industrial grade phosphoric acid. Adaptation is a constant for us—sometimes involving new filtration equipment,sometimes updated control chemistry,and often investment in analytical laboratories. Our plant reviews external mandates,like limits on cadmium or arsenic in acid used for fertilizer exports,and updates workflows accordingly.
Sustainability also influences current and near-future production choices. For example,we recover and recycle process water and optimize reaction conditions to reduce raw material waste. More companies using our acid expect clear disclosure on production and environmental footprint,so we document best available techniques and participate in environmental certifications where possible.
Working on the manufacturing side,we learn that trust comes less from marketing claims and more from consistent,open engagement. Whether it’s providing traceable data,hosting plant audits,or explaining subtle process trade-offs,we find strong supplier-user relationships cut through potential confusion about product suitability.
Our teams collaborate with technical and procurement staff on the customer side,discussing not only the acid itself but also associated logistics,compliance,and technical support. In one case,a buyer faced issues with precipitation in their system after a process change. We sent technical staff to their factory floor,reviewed their process streams,and helped identify the contamination source. Solutions like this come only through direct engagement and practical experience with the chemical’s intended role.
We maintain clear documentation and sample retention policies,supporting customer troubleshooting and compliance audits. If a user ever faces unexpected production issues,they can reference shipment records or trace material samples back to our original batch,helping pinpoint or resolve any anomalies.
Producing thousands of tons each month means we confront technical challenges from raw material variation,energy supply,and even weather conditions. Phosphate rock from different suppliers sometimes carries different mineral burdens,affecting reaction efficiency and impurity levels. If incoming loads exceed set impurity levels,we adjust blending and pre-treatment. Our technical team has learned to predict process outcomes based on feedstock analysis and to keep process parameters within narrow limits that allow us to meet our quality promise.
Logistics present another layer of complexity. Industrial acid is corrosive and hazardous,so shipment requires special certifications,containers,and emergency protocols. We participate in regular emergency response drills—both in-plant and in coordination with shipping partners—to handle potential leaks,spills,or equipment failures safely.
Cost pressures always drive improvements. We balance efficiency and safety—never cutting corners—and invest in staff training,automation,and preventive maintenance to avoid unplanned downtime. We believe operational excellence comes from precise machine work and human attention to detail—not slogans,but results shown in shipment histories and customer feedback.
Industry demand for phosphoric acid rarely stays static. Agricultural chemistry moves fast,with fertilizer blends changing in response to environmental rules or shifting crop priorities. Metal finishing,water treatment,and specialist chemical users expect altered performance as new problems emerge. They often require faster deliveries,tighter impurity control,and new packaging options. Our research and technical support teams maintain ongoing conversations with these sectors,reviewing industry trends,regulatory mandates,and customer priorities,then adapting our operations to support those needs.
We also test pilot-process lines for new grades and adjust process steps to minimize environmental impact—moving toward waste minimization and energy conservation. Customers want clear records of both chemical analysis and production methods. We maintain thorough data logs for regulatory agencies,industry audits,and customer requests,supporting a culture of openness and continuous improvement.
Our responsibility doesn’t end with the acid reaching a customer’s storage tanks. Use requires understanding of handling protocols,storage compatibility,and emergency measures in the event of leaks or exposure. We provide thorough product handling guidelines based on real-world experience,helping customers reduce risk to staff,equipment,and facilities.
Technical teams engage in process optimization,troubleshooting scaling problems,and updating application guidelines based on field observations. “How does this batch react with ammonia?” or “Does your acid cause foaming with this new formulation?”—these are questions we engage with every month. We keep open lines for feedback and field inquiries since misuse or poor handling impacts safety and downstream performance.
Our site continues to invest in staff,process upgrades,and greener production strategies. As regulatory and market environments evolve,we remain focused on providing industrial grade phosphoric acid that meets the balance of purity,strength,and reliability required by both traditional and emerging industries. With decades of hands-on experience and direct feedback from users,the product development cycle here values practical learning and transparency at every stage. Industrial grade phosphoric acid’s place in manufacturing,from fertilizers to finishing chemicals,depends on the effort and insight poured in from manufacturing teams who understand its purpose and promise.